@alienghic The problem with information in /usr/share/doc or wherever is that it's hard to find. The only local doc I use on a regular basis is Perl because it's integrated into man, and Emacs, because it's integrated into Emacs. I don't often use Python and perhaps that's why I still can't find things with pydoc. Thus, Python, glibc and everything else? I search for it online. Stack Overflow provide the additional benefit of including examples. Reference manuals often lack these.
@alienghic I wasnโt aware of these!
@kensanata There's several tools that provide search capabilities for registered documentation in /usr/share/doc/ listed at https://wiki.debian.org/doc-base
However a fair number of packages don't build the documentation, or register it with doc-base.
Also it's hard to match Google for relevant results.